Table 3.

Component matrix and variance explanation of PCA of Tartary Buckwheat sprouts

Index	Component 1	Component 2	Eigenvector of PC F1	Eigenvector of PC F2
Total phenolics	0.906	0.378	0.033	0.167
Total flavonoids	0.889	0.320	0.032	0.141
Acetylcholinesterase inhibitory rate	0.855	− 0.389	0.031	-0.172
Tyrosinase diphenolase inhibitory rate	0.826	− 0.504	0.030	− 0.223
DPPH radical scavenging ability	0.812	− 0.092	0.029	− 0.041
Tyrosinase monophenolase inhibitory rate	0.767	− 0.534	0.028	− 0.236
Total reducing power	0.745	0.161	0.027	0.071
ABTS radical scavenging ability	0.667	0.731	0.024	0.323
Eigenvalue	5.273	1.505
Contribution rate/%	65.908	18.818
Cumulative contribution rate/%	65.908	84.726